At around the 14-hour mark, Cruz, wearing black tennis shoes, complained that his feet had started to hurt.

“I will say standing here after 14 hours, standing on your feet, there’s sometimes some pain, sometimes some fatigue that is involved,” Cruz said, according to ABC News. “But you know what? There’s far more pain involved in rolling over…far more pain in hiding in the shadows, far more pain in not standing for principle, not standing for the good, not standing for integrity.”

Shortly after 6 a.m. ET on Wednesday, Sen. Marco Rubio (R-FL) was providing back-up to Cruz with a floor speech of his own. Along with Rubio and Sen. Mike Lee (R-UT), Cruz has been joined by a handful of his other Republican colleagues: Sens. David Vitter (LA), Rand Paul (KY), Pat Roberts (KS), Jeff Sessions (AL) and Mike Enzi (WY).

Rubio’s speech ended around 7 a.m. ET as the protest eclipsed 16 hours. Cruz thanked Rubio for joining him before yielding back to the Florida senator minutes later.